Lens-drilling machine.



PATENTED DEC. 12, 1905.

G. H. DAY.

LENS DRILLING MACHINE.

APPLICATION FILED MAB..25, 1905.

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w Z I w No. 807,064. PATENTED DEC. 12, 1905. G. H. DAY.

LENS DRILLING MACHINE.

APPLICATION FILED MAR.25, 1905.

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'PATENTBD DEC. 12, 1905. G. H. DAY.

LENS DRILLING MACHINE.

APPLICATION FILED MAR.25, 1905.

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UNITE sTATEsf PATENT oEFioE.

GEORGE H. DAY, OF SOUTHBRIDGE, MASSACHUSETTS, ASSIGNOR TO AMER- v ICANOPTICAL COMPANY, A CORPORATION OF MASSACHUSETTS.

Specification of Letters Patent.

Patented Dec. 12, 1905.

Application filed March 25,1905. Serial No. 251,962-

To all whom, it may concern.-

Be it known that I, GE RGE H. DAY, a citizen of the United States,residing at Southbridge, in the county of Worcester and State ofMassachusetts, have invented certain newand useful Improvements inLens-Drilling Machines, of which the following is a specifithe holes tobe drilled through the lens may be at a predetermined distancefrom theedge of the lens and in line with the major axis or at either sidethereof at a predetermined distance, as desired.

The object of my invention is to improve upon the construction of alens-drilling machine of the class referred to as ordinarily made and tomake a machine simple in construction and effective in operation forhold ing and drilling lenses.

In my improvements I preferably employ the ordinary vertically-movingand rotary drill, which is raised by a spring and lowered by theoperator through an operating-handle and rotated by a driven beltthrough belt connections passing around grooved pulleys,

all in the usual and well-known way.

In connection with the drilling mechanism of the machine I use myimprovements for supporting and holding the lens and for adjusting theposition thereof relative to the drill, as will be hereinafter fullydescribed.

I have only shown in the drawings sufIicient parts of a lens-drillingmechanism of well-known construction and operation'with my improvementscombined therewith to enable those skilled in the art to understand theconstruction and operation thereof.

Referring to the drawings, Figure 1 is a front vview of a lens-drillingmachine embodying my improvements. Fig. 2 is a sectional plan .view online 2 2, Fig. 1, looking in the direction of arrow (1, same figure.Fig. 3 is a detached plan view of the holder, partially broken away, forthe longitudinally-moving slides and lens-clamping jaws and showing therack-and-pinion mechanism. Fig. 4 is a longitudinal section on line 4 4,Fig. 3, looking in the direction of arrow 7), same figure.

Fig. 5 is a transverse section on line 5 5, Fig.

3, looking in the direction of arrow 0, same figure. Fig. 6 shows theunder side of one of the rotary disks detached. Fig. 7 shows the underside of the other rotary disk detached. Fig. 8 is a side view of thespring-blade and pin shown in Fig. 7 detached. Fig. 9 shows the pinshown in Fig. 8 detached. Fig. 10 shows the hollow shaft and pinionthereon detached. Fig. 11 shows the inner shaft and pinion thereondetached. Fig. 12 shows the under side of the lens-holding jaws detachedand in a closed position. Fig. 13 is a detached plan view of thelens-holding jaws and their supports and the holder therefor and thelens-supporting block and a lens with the major axis thereof in linewith the supporting-block. Fig. 14 corresponds to Fig. 13, but shows adifferent position-of the parts, with the supporting-block for the lensat one side of the major axis thereof. Fig. 15 corresponds to Fig. 14,but shows the parts in a different position with, the supporting-blockfor the lens at the opposite side of the major axis thereof. Fig. 16shows the lens-supporting block and the adjustable stop or gage thereondetached. Fig. 17 is a central vertical section through the parts shownin Fig. 16. Fig. 18 is an edge view of the stop or gage and itssupporting-arm detached looking in the direction of arrow (1, Fig. 19.Fig. 19 is a front view of the stop or gage and its supporting-armdetached looking in the direction of arrow 6, Fig. 18. Fig. 20 shows thetop of the lens-supporting block shown in Fig. 16 detached, and Fig. 21shows the top of the stop or gage detached.

In the accompanying drawings, 1 is the bed or frame of the machine,preferably made of metal and having extending up therefrom at one cornera column or post 2 for support ing the drilling mechanism of themachine,

which may be of any usual and well-known tary shaft 3 and is moved downby the opsecured therein by a screw 9.

On the rod or spindle 10 is loosely mounted.

erator to lower the shaft 3 and the drill 5 during the drillingoperation in the usual and well-known way.

In connection with the drill mechanism of the machine above describedare combined my improvements. 7

Iwill first describe my improved movable lens support or block on whichthe end of the lens which is being drilled may be supported and whichcarries an adjustable gage or stop which bears against the edge of thelens and positions it relative to the drill.

A post 8 extends up from the bed or frame 1 of the machine in front ofthe column or post 2 of the drill mechanism. The lower end of a rod orspindle 10 extends down into a hole in the upper part of the post 8 andis (See Fig. 17.)

to rotate or swivel freely thereon and be removed therefrom the lenssupport or block 11. (See Figs. 16 and 17.) The lens-support 11 has inthis instance a central vertical opening therethrough for the spindle10,

and in the upper part of said opening is secured by a screw 12 a block13, having a pin 13, preferably made separate therefrom and adjustablysecured in a vertical opening therein by the screw 12 to be raised orlowered, as desired. (See Fig. 17.) The upper end of the pin 13 isalways in exact vertical alinement with the drill and supports that partof the lens through which the hole is to be drilled.

The upper end of the lens-support 11 has an extension 11 on one sidethereof with projections 11 thereon, which form uides (see Fig. 20) forthe upper end of a at springarm 14. The lower end of the spring-arm 14is secured to the base of the lens-support 11 by a screw 15. The upperend of the spring-arm 14 has secured thereto, in this in stance by twoscrews 16, a block 17, which extends over and moves upon the upper endof the lens-support 11 on the side extension 11 thereon at one side ofthe block 13. The inner end of the block 17, which forms a gage or stopfor the edge of the lens, is curved, as shown in Fig. 21, and the shapeof the curve is such as to allow the largest lens to engage at thecenter of the curved end of the stop or gage 17 The position of theinner end of the gage or stop 17 relative to the pin 13 on the lensblock13 to cause the lens against the edge of which the stop 17- bears to bemoved inwardly to bring the pin 13 nearer the edge of the lens isregulated, in this instance by a thumb-screw 18, having preferably anenlarged knurled head and a threaded end, which turns loosely through anopening 14 in the spring-arrn 14 and is screwed into a threaded hole inthe side extension 11 on the lens-support 11. (See Fig. 17

By turning the set-screw 18 the gage or I stop 17, which engages theedge of the lens, is

may be used.

In connection with the lens-support 11, carrying the block-13, havingthe pin 13 which forms the support for the end of the lens directlyunder the drill as it is being drilled, and the adjustable gage or stop17 I employ the two lens-holding jaws or supports 19 and 20, whichextend above the lens-support 11 and are shaped on their inner edges tocorrespond with the shape of a lens 21. Each lens-support 19 and 20 hasupon its inner edge two inwardly-extending projections 19 and 20,respectively, (see Fig. 13,) which are preferably made integral with thesu ports and form surfaces between which t e lens is clamped, as shownin the drawin s. The projections 19 and 20 act to bring t e lens intoproper alinement preparatory to being drilled.

The lens rests at its outer end upon supports 19 and 20, comprising inthis instance thin plates or blades (see Fi 12) permanently secured tothe under si e of the supports 19 and 20 at their outer ends by.screws22, with their inner ends extending out beyond the projections 19 and20. The lens rests at its inner end upon supports 19 and 20 and may alsorest upon the pin 13. The supports 19 and 20 are preferably thin platesor blades, each adjustably secured to the under side of the supports 19and 20 at their inner ends in a plane below the projections 19 and 20 bya screw 23, extending through a slotin the plates 19 and 20 (See Fig.12.) The supports 19" and 20" may be moved out of operative position, sothat the inner end of the lens will be supported only on the pin 13, ifdesired.

The clamps or supports 19 and 20 are each secured in this instance uponthe under side of the ends of two lon itudinally-reciprocatin slides orbars 19 an 20 The bars 19 and 20 are supported and have a longitudinalmovement in the upper part of a holder or frame 24, which is recessedupon its upper side to receive and hold the bars 19" and 20 A plate 25extends over the bars 19 and 20 and is secured to the holder 24 byscrews 25. Extending down from the holder 24, at the outer end thereof,is a spindle 26, the upper end of which is secured Within a boss 24 onthe lower side of the outer end of the holder 24. The spindle 26 extendsloosely into a central vertical opening throu h the post 1, extending upfrom one end 0 the frame 1. (See Fig. 1.) Theboss 24 rests upon theupperside of the post 1, and through the spindle 26 the frame or holder 24has a pivotalmotion and may also be readily removed by raising thespindle 26 out of the post 1 The front end of the holder 24 has adownward extension 24 thereon, which is adapted to extend over and restupon a stand 1, extending up from the frame or bed 1 to support thefront end of the frame or holder 24. (See Fig. 1.)

A sprin 27, attached at one end to the under side 0 the bar-holder 24and at its other end to a pin 27, in this instance on the under side ofthe clamp or support 19, acts to move the bars 19?.and 20 and the twoclamps or supports 19 and 20 thereon toward each other to hold the lens21 supported on the projections on the inner edges of said supports 19and 20.

Within an opening through the holder-24 and a boss 24" on the lower sideof said holder is loosely j ournaled a'hollow shaft 28, (see Fig. 4,)which has fast on its upper end a pinion 28, which meshes with teeth 19on the lower inner edge of the recessed portion 19 of the bar or slide19*. (See Figs. 3 and 5.) Upon the lower end of the hollow shaft 28 issecured, in this instance by a screw 29, (see Fig. 4,) a disk 30, havinga beveled edge with one index-line marked zero (0) thereon. (See Fig.1.) Secured to the disk 30 is a handle 31, extending out therefrom, by

means of which said disk and with it the hollow shaft 28 and the pinion28 are rotated. Within the hollow shaft 28 is loosely journaled ashaft'32, having fast on its upper end a pinion 32 of the same size andextending directly over the pinion 28. The pinion 32 meshes with teeth20 on the upper inner edge of the recessed portion 20 of the bar orslide 20 (See Fig. 3.) On the lower end of the shaft 32 and directlybelow the disk 30 is secured, in this instance by a screw 33, a disk 34,which has in this instance a beveled edge With index-lines or a scalethereon leading from a zero (0) line in opposite directions. (See Fig.1.) Upon the under side of the disk 34 is secured by a screw 35 one endof a flat spring 36, (shown detached in Fig. 8,) which has theprojecting engaging end 36. The spring 36 has in this instance anopening 36 therethrough enlarged at one end to receive a pin 37, whichhas an annular groove 37 therein (see Fig. 9) to receive the edges ofthe narrow part of the opening 36" and cause said pin 37 to be moved inand out with the spring 36. The pin 37 extends loosely through anopening in the disk 34, and its inner end is adapted to enter and engageany one of a series of holes 30 in the under side of the disk 30. (SeeFig. 6.)

position of the holes 30 correspond to the index-lines on the edge ofthe disk 34.

When the inner endof the pin 37 extends into one of the holes 30in theunder side of the disk 30, as shown in Fig. 5, the disks 30 The and 34and the shafts 28 and 32 and pinions 28 and 32 thereon rotate together,and through the handle 31 theseveral parts are rotated, and the pinions28 and 32 meshing with the teeth 19"" and 20 on the bars or slides 19and 20 and moving in the same direction as a single pinion will movesaid slides longitudinally in opposite directions to move apart or openthe jaws or supports 19 and 20 preparatory to receiving the lens 21.When the handle 31 is released, the spring 27, attached to the slide 19and to the frame 1, acts to move the slide 19 and the jaw 19 inwardly,and the movement of said slide through the pinions 28 and 32 moving inthe same direction as a single pinion and meshing with the teeth 19 and20 will move the other slide 20 and jaw 20 outwardly to bring theprojections 19 and 20 on the jaws together, as shown in Fig. 3, which-istheir normal position. The parts are so assembled that when the holethrough the lens is to be drilled exactly on the major axis theindex-line Zero on the upper disk 30 will be in line with the index linezero on the lower disk 34, as shown in Fig. 1. tance from the edge ofthe lens for the holes to be drilled is regulated by turning in or outthe set-screw 18 to adjust the position of the gage or stop 17, as abovedescribed. With the supports or jaws 19 and 20inthe position shown inFig. 3 the handle 31 is moved to the left to open the jaws preparatoryto receiving the lens 21. The lens is placed within the aws 19 and 20and between the projections 19 and 20 thereon, the handle 31 isreleased, and the spring 27 acts to move the jaws together, as abovedescribed, to position the lens supported on the blades 19" 19 and 20 20and clamp it between the jaws, as shown in Fig. 2, and when the end ofthe holder 24 is moved inwardly on its pivotal support the gage or stop17 engages the edge of the lens and holds it over the block 13, with theportion to be drilled resting on the pin 13' directly below the drill,which is moved down into contact with the lens to drill the hole thereinin the usual way. In case it is desired to drill a hole in the lens atone side of the major axis then the free engaging end 36 of the spring36 is depressed to move the inner end of the pin 37 out of a hole 30 inthe disk 30 and leave said disk, the hollow shaft 28, and pinion 28 freeto turn independently of the disk 34, shaft 32, and pinion 32. Themovement of the handle 31 and the spring-blade 36 in opposite directionsfrom the position shown in Fig. 13 to the position shown in Fig. 14through the rotation of the pinions 28 and 32 in opposite directionswill cause both slides 19 and 20 and the jaws 19 and 20 thereon to movetogether to the left and carry the lens, to the left, so that thelens-supporting block 13 therefor will be at the right of the major-axisThe dis- IIS line, as shown in Fig. 14. The movement of handle 31 andthe spring-blade 36 to move the slides 19 and 20 and the jaws 19 and 20thereon, as above described, is regulated by the index-line on the diskand the indexlines on the disk 34, as will be well understood. The stopor gage 17 by reason of the rotary or swivel motion of the lens-support11, which carries it, will adjust itself automatically against the edgeof the lens in the different positions of the lens, as shown in Figs. 14and 15, and insure the drilled hole being always accurately distancedfrom the edge of the lens.

The advantages of my improvements will be readily appreciated by thoseskilled in the art. I provide a mechanism of simple con structioncomprising the two su ports or jaws 19 and 20, attached to the rac -barsor slides 19 and 20 for holding the lens to be drilled. The supports orjaws are positively moved apart to receive the lens and yieldingly movedtogether by a spring to hold the lens. I combine with the mechanism formoving the lens-support or jaws and the rack, bars or slides in oppositedirections mechanism which is operative when desired for moving saidlens-supports or jaws and the rackbars or slides in the same directiontocarry the lens to the right or to the left of the drill apredetermined distance as desired for the drilling of the hole at theright or the left of the major axis of the lens. I provide a rotary orswivel support for the lens at the point where it has to be drilled.Said support carries a stop or gage, the position of which is adjustableto vary the distance of the edge of the lens from the support on whichit is supported according to the dis tance from the edge of the lens ofthe hole to be drilled. By means of the rotary support carrying the stopor gage said stop or gage will adjust itself to the edge of the lens inthe giigl'lprent' positions of the lens relative to the It will beunderstood that the details of construction of my improvements may bevaried, if desired.

I have described herein my machine for drilling lenses; but it may beused for drilling other articles or for other purposes.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a machine for drilling lenses, &c., the combination with twolongitudinally-reciprocating slides or bars extending in the samehorizontal plane, and each bar carrying a support for a lens and havingteeth thereon to be engaged by a pinion, of means for positively movingsaid bars in opposite directions to move apart said su ports,preparatory to receiving a lens, an means for moving said barsyieldingly toward each other.

2. In a machine for drilling lenses, &c., the combination with twolongitudinally-recipcating slides or bars, extending in the samehorizontal plane, and each bar carrying a lens-support and havin teeththereon to be engaged'by a pinion, of means for positively moving saidbars in opposite directions to move apart said support, preparatory toreceiving a lens, and means for moving said bars yieldingly toward eachother, and means for positively moving the two bars and supportssimultaneously in. a direction toward or away from the drill, to changethe position of the lens relatively to the position of the drill.

3. In a machine for drilling lenses, &c., the combination with twolens-supports for holding a lens, movable toward and away from eachother, and bars carrying said supports and having teeth thereon, andadapted to be moved in opposite directions, and also moved in the samedirection, of means for moving said bars, said means comprising a pinionmeshing with the teeth on one bar and fast on a rotary shaft, and saidshaft secured to a rotary disk, and said disk, and means for rotatingthe same, and a second pinion meshing with the teeth on the other bar,and fast on a hollow rotary shaft, and said shaft secured to a rotarydisk, and said disk, and means for rotating thesame, and movableconnections between said disks, to cause them to rotate together in thesame direction, and cause the two pinions to rotate as a single pinion,to move the two bars in opposite directions, or to allow said disks tobe rotated separately in opposite directions, and cause the two pinionsto rotate separately in opposite directions, to move the two bars in thesame direction.

4. In a machine for drilling lenses, &c., the combination with supportsfor holding a lens, and means for moving said supports apart to receivethe lens, and means for yieldingly moving them together to holdthe lens,of a rotary or swivel support for the lens at the point where it is tobe drilled, and an adjustable stop or gage on said support, adapted toengagev the edge of the lens and to adjust itself to the edge of thelens in its different positions relatively to the drill.

5. In a machine for drilling lenses, &c., a rotary or swivel support fora lens at the point where it is to be drilled, and an adjustable stop orga e on said support, to engage the edge of the lens.

6. In a machine for drilling lenses, &c., the

IIS

combination with two supports for holding a lens, and rack-bars carryingsaid supports and pinions meshing with said rack-bars, of

mechanism for moving said rack-bars in oplens, and two rack-barscarrying said supports, of means for moving said rack-bars in oppositedirections, and in the same direction, said means comprising two pinionsadapted to be rotated as a single pinion in the same direction, and alsorotated as two separate pinions in ogposite directions, and means forrotating sai pinions.

GEO. H. DAY.

Witnesses:

O. F. HILL, J. C. WELLS.

